Performance Tool W83202 1/4" to 3/4" Stud Extractor, NULL,Wilmar Performance Tool,W83202" /> For removing broken or seized studs, bolts, etc. from 1/4-inch to 3/4-inch diameter Knurled roller uses cam action to grasp stud firmly while minimizing damage Use 1/2-inch drive ratchet Sizes: 1/4 to 3/4-inch